Been working on this 620 most of the day. Got a lot of little things done. Mechanical fuel pump installed, choke cable installed, carb heat shield installed, brakes adjusted, among other little bits. Also wire welded the thin heat shield back to the muffler, and filled in a hole punched into the muffler. Had a fun day!

The tank still has to be repaired, plus a big job when I get to it....the right brake hardly works at all, and is a BIG job getting at it as they are behind the drop axles, up against the tranny housing. That will be a job when winter turns cold.....maybe.

Daniel, are you trying to scare the green machines next door again? You keep bringing home tractors like that, your BIL will have a hard time keeping up with the "brown spots" in his yard when his tractors see them...

Daniel, are you trying to scare the green machines next door again? You keep bringing home tractors like that, your BIL will have a hard time keeping up with the "brown spots" in his yard when his tractors see them...

Those 430's have nothing to fear....they are powerhouses! But I think Fred is a bit intimidated! LOL

Thanks everyone for the compliments. I tell you one thing, these aren't the easiest to work on. Things are tight & in the way of everything else you need to do. I finally got the rear pto shaft & clutch back in this morning. I will run static tests on the regulator & rectifier if I have time before afternoon chores.

Daniel, about the fuel pumps. All modern electronic components that are designed for use in automotive 12v systems should be able to withstand the alternator spikes which can be 60v or more. These pulses are very short in duration and are hard to measure accurately on a typical DVM. Who knows if the suspect fuel pumps were built to those standards but my gut feeling is that 17v would not destroy the electronic parts. However if a prolonged 17v was placed on them the pump might draw enough current to damage the parts or the pump solenoid itself. If you have a bad ground then that may be causing problems with the pumps as well. Let us know what you find.

Fred double checked my readings, and it's confirmed, both regulator & rectifier are bad. I'll static test the stator asap, and if it's bad, I'll fit a small alternator onto it. If stator is good, I may save up for the 2 new electronics, but at $150 + shipping, that will be a while.

I don't have a stand alone rectifier, but a std Onan 3 spade regulator/rectifier doesn't put out any DC, even though both stator AC lines are putting out 17VAC each, which is the perfect voltage. Not sure why, just doesn't work.